preamble: say you use your laptop for an installation with an external monitor/projector, and want to be able to close your lid keeping the patch open or whatever there is on your laptop display, keeping the fullscreen on external.
Now what W10 and any kind of W as far as I remember is deactivating the display. This is something hardware related I fear, you close the lid, the display goes off. Further with dx11 and its meta-fullscreen, the main display is pushed onto the secondary display showing the bar, plus it messes with the display configuration.
I have used another laptop and then made a little patch that sends the parameters that needs adjustment over network to machines with no patch screen. Or alternatively used vnc or teamviewer to exit full-screen, do the adjustment and then log out again
Thank you for the ideas, I ve used all these aforementioned techniques in the past but this time I am in an awkward situation, with no proper communication, space and time to get it that way.
This lid question is just a matter of getting to know how exactly it works, if there is no way to make it stop behaving that way a little shim between lid and body will just do.
You can disable the driver for the “acpi lid” so that Windows doesn’t detect the lid closing. This will solve the problem.
If you only delete the driver it will autodetect and replace the driver, So instead change the driver to “Standard Volume Manager” as this will ensure that the lid switch is ignored by Windows.